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液相分析

新虫 (初入文坛)

[求助] 高效液相基线不分离而且峰还是倒着的怎么办 已有1人参与

流动相,乙腈:0.1%磷酸水,第一幅图乙腈比水是20比80,第二幅图是30:70.尝试过减少进样量,峰的趋势都差不多,但就是分不开。求大神指导

高效液相基线不分离而且峰还是倒着的怎么办


高效液相基线不分离而且峰还是倒着的怎么办-1


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376zfm

至尊木虫 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
不知色谱条件和波长是否合适?另外可以先排查一下检测器是否故障,你用二通替换柱子,观察基线是否正常,如正常,正常方法进样,死时间就会出峰,进样量可以大点,大到出峰最好能截顶,如果响应能截顶,那检测器没有问题,要么是你的方法的问题,要么是柱子的问题。
2楼2017-03-21 10:50:00
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